As I stated, I am not opposed to drones being used for search and rescue etc. It is also not the police that I fear using this technology for legitimate law enforcement purposes. I did sit on a jury once and had a fire marshall testify to observing a suspect start a fire when in fact in his position at the time his view of the alleged crime was blocked by a building. Two others did see it, and videos did show the crime, but he could not possibly have seen it. Prosecutors are particularly good at hiding exculpatory evidence as well. I am digressing, sorry.
However, I do see government corruption as an endemic part of our nation (look at the influence of lobbyists, legal bribery, and look at our justice department and their record). I have no doubt that they would find a way to use drones in an inappropriate manner. We are just testing the waters with this technology and we need to tread carefully before we allow this type of surveillance to go forward. Here is the 4th amendment:
"The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."
I would think that at some point in the future this will be a decision to be made by the Supreme Court as to whether or not drone surveillance constitutes a search. Probably not, since they use video now, but it may depend on the circumstance and use of the drone.
Do we all want to be safe, of course, but at what cost to our freedom?